9008621 has 4 divisors (see below), whose sum is σ = 9043932. Its totient is φ = 8973312.

The previous prime is 9008599. The next prime is 9008633. The reversal of 9008621 is 1268009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1268009 = 271 ⋅4679.

It can be written as a sum of positive squares in 2 ways, for example, as 5808100 + 3200521 = 2410^2 + 1789^2 .

It is a cyclic number.

It is not a de Polignac number, because 9008621 - 2⁶ = 9008557 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9008221) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17270 + ... + 17783.

It is an arithmetic number, because the mean of its divisors is an integer number (2260983).

Almost surely, 2^9008621 is an apocalyptic number.

It is an amenable number.

9008621 is a deficient number, since it is larger than the sum of its proper divisors (35311).

9008621 is a wasteful number, since it uses less digits than its factorization.

9008621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35310.

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 9008621 is about 3001.4364894164. The cubic root of 9008621 is about 208.0747774161.

The spelling of 9008621 in words is "nine million, eight thousand, six hundred twenty-one".